On Fri, Feb 15, 2019 at 09:19:02PM +0000, Felipe Franciosi wrote: > Over the last year or two, I have done extensive experimentation comparing applications using libaio to those using SDPK. Try the io_uring interface instead. Its queued up in the linux-block for-next tree. > For hypervisors, where storage devices can be exclusively accessed with userspace drivers (given the device can be dedicated to a single process), using SPDK has proven to be significantly faster and more efficient. It doesn't work so well for file based or multi-device backing storage. But if you are sequestering an entire controller over to a VM, direct-assign/device-passthrough is usually also an option and that ought to be even faster.
